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Claude Fable 5.1 vs Gemma 3 12B

Claude Fable 5.1 leads the LLM Stats Score 57.0 to 5.8. Gemma 3 12B is 320.0x cheaper per token.

Anthropic · Google · Updated for 2026

Which is better?

Claude Fable 5.1 leads the overall LLM Stats Score 57.0 to 5.8, ranking #1 overall.

On price, Gemma 3 12B is roughly 320.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Fable 5.1 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Fable 5.1

  • overall performance matters — it scores 57.0 and ranks #1 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose Gemma 3 12B

  • cost matters — it's about 320.0x cheaper per token
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude Fable 5.1
Anthropic
Gemma 3 12B
Google
Core performance indexes
LLM Stats Score
57.0
#1
5.8
#283
Reasoning
54.5
#4
6.2
#276
Coding
37.0
#17
2.9
#213
Cost, coverage & limits
Benchmark wins
—
—
Input price
$10.00 / M
$0.05 / M
Output price
$50.00 / M
$0.10 / M
Context window
1,000,000
131,072

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude Fable 5.1
Gemma 3 12B
Vision
40.8#1
-3.8#192
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

7 reported for Claude Fable 5.1 · 26 for Gemma 3 12B

No common benchmarks found

Claude Fable 5.1 and Gemma 3 12Bdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Gemma 3 12B costs less

For input processing, Claude Fable 5.1 ($10.00/1M tokens) is 200.0x more expensive than Gemma 3 12B ($0.05/1M tokens).

For output processing, Claude Fable 5.1 ($50.00/1M tokens) is 500.0x more expensive than Gemma 3 12B ($0.10/1M tokens).

In conclusion, Claude Fable 5.1 is more expensive than Gemma 3 12B.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Thu Sep 03 2026 • llm-stats.com
Anthropic
Claude Fable 5.1
Input tokens$10.00
Output tokens$50.00
Best providerAnthropic
Google
Gemma 3 12B
Input tokens$0.05
Output tokens$0.10
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Fable 5.1 accepts 1,000,000 input tokens compared to Gemma 3 12B's 131,072 tokens. Gemma 3 12B can generate longer responses up to 131,072 tokens, while Claude Fable 5.1 is limited to 128,000 tokens.

Anthropic
Claude Fable 5.1
Input1,000,000 tokens
Output128,000 tokens
Google
Gemma 3 12B
Input131,072 tokens
Output131,072 tokens
Thu Sep 03 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Fable 5.1 and Gemma 3 12B support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Fable 5.1

Text
Images
Audio
Video

Gemma 3 12B

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Fable 5.1 is licensed under a proprietary license, while Gemma 3 12B uses Gemma.

License differences may affect how you can use these models in commercial or open-source projects.

Claude Fable 5.1

Proprietary

Closed source

Gemma 3 12B

Gemma

Open weights

Release Timeline

When each model was launched

Claude Fable 5.1 was released on 2026-09-01, while Gemma 3 12B was released on 2025-03-12.

Claude Fable 5.1 is 18 months newer than Gemma 3 12B.

Claude Fable 5.1

Sep 1, 2026

1 days ago

1.5yr newer
Gemma 3 12B

Mar 12, 2025

1.5 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Claude Fable 5.1 is available from Anthropic. Gemma 3 12B is available from DeepInfra.

Claude Fable 5.1

anthropic logo
Anthropic
Input Price:Input: $10.00/1MOutput Price:Output: $50.00/1M

Gemma 3 12B

deepinfra logo
Deepinfra
Input Price:Input: $0.05/1MOutput Price:Output: $0.10/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Fable 5.1 and Gemma 3 12B side-by-side, then vote on the output you prefer.

Claude Fable 5.1
✓ Preferred
Gemma 3 12B
Open in Playground

FAQ

Common questions about Claude Fable 5.1 vs Gemma 3 12B.

Which is better, Claude Fable 5.1 or Gemma 3 12B?

Claude Fable 5.1 leads the LLM Stats Score 57.0 to 5.8. Claude Fable 5.1 is made by Anthropic and Gemma 3 12B is made by Google. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Fable 5.1 compare to Gemma 3 12B in benchmarks?

Claude Fable 5.1 scores OSWorld 2.0: 77.9%, CursorBench v3.2: 73.4%, Humanity's Last Exam: 65.0%, GDPval-AA: 61.8%, Terminal-Bench 4.0: 55.8%. Gemma 3 12B scores GSM8k: 94.4%, IFEval: 88.9%, DocVQA: 87.1%, BIG-Bench Hard: 85.7%, HumanEval: 85.4%.

Is Claude Fable 5.1 cheaper than Gemma 3 12B?

Gemma 3 12B is 200.0x cheaper for input tokens. Claude Fable 5.1 costs $10.00/M input and $50.00/M output via anthropic. Gemma 3 12B costs $0.05/M input and $0.10/M output via deepinfra.

What are the context window sizes for Claude Fable 5.1 and Gemma 3 12B?

Claude Fable 5.1 supports 1.0M tokens and Gemma 3 12B supports 131K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Fable 5.1 and Gemma 3 12B?

Key differences include LLM Stats Score (57.0 vs 5.8), context window (1.0M vs 131K), input pricing ($10.00 vs $0.05/M), licensing (Proprietary vs Gemma). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Fable 5.1 and Gemma 3 12B?

Claude Fable 5.1 is developed by Anthropic and Gemma 3 12B is developed by Google.

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